Canon LBP-1210 Service Manual page 123

Paper path
Direction of drum rotation
Drum cleaning
block
Paper delivery
1. Electrostatic latent image formation block
This block follows two steps to produce an electrostatic latent image on the photosensitive drum.
When Step 2 of this block is completed, negative charge remains in the unexposed "dark"
areas; however, that in the exposed areas are eliminated.
The image of the negative charge on the drum is invisible to the human eye, so it is called an
"electrostatic latent image."
Electrostatic latent image formation block
2. laser beam exposure
1. Primary charging
7. Drum cleaning
Fixing block
5. Separation
6. Fixing
Transfer block
Figure 2-5-4
Exposed
area
0
-100
-500
Primary Laser
charging beam
(step 1) exposure
(step 2)
Figure 2-5-5
3. Developing Developing block
4. Transfer
Time (t)
Unexposed
area
Transfer Primary
(step 4) charging
(step 1)
CHAPTER 2
Pick-up
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